baber/WOPTO huggingface dataset:
Patent GB-285602-A (GB)
Title: Improved circuit arrangements for hunting switches in automatic and semi-automatic telephone systems
IPC: H04Q3/00
Filed: 1926-12-10
Abstract: 285,602. Siemens Bros. & Co., Ltd., and Caswell, A. E. Dec. 10, 1926. Automatic exchange systems. - In a group selector having two sets of wipers which hunt simultaneously, the stepping relay G is of ordinary type and tests the condition of the outgoing links at the end of the operative stroke of the rotary magnet RM. The rotary magnet RM is connected up on the relapse of change-over relay C, and after each stroke connects relay G(1) at rm to the upper test wiper C<1>. While both sets of wipers are passing over busy links, relay G interacts with the rotary magnet, locking winding G(2) being short-circuited over the lower test wiper C<2>. If the upper preferred link is free, relay G does not energize, and switching relay HA, which was previously short-circuited. energizes in the usual manner. If the upper link is busy, but the lower link is free, relay G energizes and locks temporarily, while switching relay HB, which was previously short-circuited, energizes, disconnecting relay G and the rotary magnet. If all the links outgoing from the level are busy, shaft contacts are operated in the eleventh position, and relay HA energizes and connects an interrupter over wiper B<2> to relay HB. In the energized position of relay HB, battery over line relay A is connected to both wires over wipers B<1> and A<2>, A<1> (release relay B being held over wiper C<2>). while in the deenergized position, busy tone BT is connected to the a-wire. Where there are spare levels, the test terminals are earthed, to effect stepping over the level, but the eleventh terminal of wiper B<2> is disconnected, so that a continuous tone signal is given.
Patent GB-1456102-A (GB)
Title: Intrusion detection system
IPC: H01H36/00
Filed: 1974-07-17
Abstract: 1456102 Pressure transducers WESTINGHOUSE ELECTRIC CORP 17 July 1974 [24 July 1973] 31575/74 Heading G1N [ Also in Division G4 ] A transducer to be buried in the ground for sensing mechanical shocks, as produced by e.g. an intruder, comprises an insulated wire 12 (Fig. 1) loosely positioned in a metal tube 14 whereby disturbances at ground level cause the wire to move inside the tube and produce a capacitance charge between conductor 16 and tube 14 which is fed as a voltage signal to a recorder or alarm 30, using the electret characteristic of the wire 12 based on the charge fed into the wire during manufacture, or from a separate voltage source S. The output signal is separated by filter 22 into its high and low frequency components.
Patent GB-745208-A (GB)
Title: Improvements relating to the production of an antibiotic substance by a cephalosporium species
Filed: 1952-12-12
Abstract: Cephalosporin N, a penicillinase sensitive antibiotic active against both gram negative and gram positive bacteria and produced by Cephalosporium I.M.I. 49137, is produced in increased yield by fermenting a Cephalosporin-producing-microorganism in a nutrient medium containing sucrose and/or lactose, ammonium acetate and a source of organic nitrogen under aerobic conditions of submerged or surface culture at 22 DEG  to 33 DEG  C., and preferably pH 6.5 to 7.4. Preferably, the nitrogen content is 400 to 1600 mg./litre, the ammonium acetate 2 to 9 g. per litre and the sucrose and/or lactose 1 to 4 per cent of the nutrient medium.  The preferred nitrogen source is corn steep liquor.  Cephalosporin N is isolated from the clarified broth by (a) adsorption on buffered carbon at pH 6 to 6.5, followed by elution with aqueous acetone or aqueous water-miscible alkanol after first wetting the carbon with a water-immiscible solvent such as benzyl alcohol; and then (b) adsorption on alumina at 0 DEG  to 10 DEG  C. and pH 4.2 to 6.5, followed by elution by means of aqueous alkali or acetone, methanol, ethanol, propanol or methyl acetate. Further purification may be obtained by (a) counter-current distribution using a solution of an alkali metal citrate, e.g. sodium or potassium citrate and ammonium sulphate in aqueous alkanol, especially ethanol; (b) adsorption at 0 DEG  to 4 DEG  C. on an anion exchange resin followed by elution with a dilute acid; or (c) extraction from aqueous solutions at pH 2.5 to 3.5 by means of saturated aqueous solutions of phenol or its homologues, preferably in the presence of an organic tertiary base such as dimethylaniline, pyridine, lutidine, collidine, and 2,4,6-trimethyl pyridine.  It is preferred to remove all trace metals such as copper, tin, lead and mercury from the water and solvents before use.
Patent GB-906418-A (GB)
Title: Improvements in or relating to the preparation of ferrous citrate
IPC: C07C59/265
Filed: 1960-09-14
Abstract: Ferrous citrate is prepared by preparing an aqueous solution containing citric acid and a ferrous salt and having a pH of 2-5, and heating to precipitate ferrous citrate, e.g. by boiling under reflux. Specified ferrous salts are the sulphate, acetate, propionate and ferrous ammonium sulphate.  Examples prepare a product of empirical formula C6H8O8Fe.
Patent GB-1153203-A (GB)
Title: Improvements in or relating to Unitary Concrete-Reinforcing Structures
Inventor: BJERKING SVEN-ERIK
IPC: E04C5/16
Filed: 1966-07-15
Abstract: 1,153,203. Wire fabrics. S. E. BJERKING 15 July, 1966 [12 Nov., 1965], No. 31971/66: Heading D1K. A concrete reinforcing wire fabric comprises two or more longitudinal bars 14 interconnected by transverse bars 15, in which the free ends of one set of bars are bent down to form feet 16. The ends of the feet are rust-treated, e.g. are provided with tight fitting plastics caps 17, which can rest on the bottom of a mould for a concrete slab or the like. Several of the units shown may be joined by further transverse bars to form a composite structure, or two units may be joined at right angles. Several longitudinal bars may be joined by transverse bars to .form a structure, which may be joined at right angles to a similar structure, or two several of the units shown. In a further embodiment the bars 14 are joined adjacent the top of the legs and the bars alternatively project on each side of the structure.
Patent GB-1318997-A (GB)
Title: Disposable carbon dioxide absorber
IPC: A62B19/00
Filed: 1970-07-01
Abstract: 1318997 Exhaled gas treater CHEMETRON CORP 1 July 1970 [28 July 1969] 31984/70 Heading A5T [Also in Division B1] A carbon dioxide absorber for treating an exhaled mixture of air and theraputic gases for recirculation comprises a canister to contain a carbon dioxide absorbent material with inlet and outlet fittings at its ends walls and inlet and outlet check valves connected to the respective fittings to prevent any flow of gases out of the inlet fitting or back into the outlet fitting. The canister 12 has perforated retaining walls 42 and 44 separating the absorbent material from the respective inlet and outlet end walls 14 and 16. Sections 48 and 64 of the retaining walls which are aligned with the inlet and outlet are imperforate as are the margins 50 and 66 of the walls. An exhaled mixture of gases passes through the inlet check valve fitting 80 attached to the inlet fitting 18 which comprises a cross member 86 aligned with a disc 90, the disc being connected to a stem 94 which passes through an aperture in the cross member. A similar outlet check valve fitting 110 is attached to the outlet fitting 24. An infeed pipe 140 is attached to the outlet fitting to pass fresh gas into the stream of treated exhaled gas. A pressure gauge may be fitted at the end 70 of the inlet fitting, whilst a breathing bag may be fitted at the beaded end 72a of the outlet fitting to catch moisture from the canister. In a second embodiment Figs. 5 and 6, not shown, the valve fittings are formed integrally with the respective inlet and outlet fittings. A colour indicator may be added to the absorbent material in the canister to indicate approxiately how much carbon dioxide has been absorbed, and a transparent panel is fitted into the canister in order to observe the colour change.
Patent GB-349414-A (GB)
Title: An improvement in or relating to the packing of cigars
IPC: B65D5/72
Filed: 1930-10-24
Abstract: 349,414. Unpacking. PHILLIPS, L. S., and HUNTER, MORRIS, & ELKAN, Ltd., J., 55, St. Mary Axe, London. Oct. 24, 1930, No. 32000. [Class 94 (i).] In packing cigars, a flap d is provided on a strip c of water proof paper &c. disposed between the cigars, so that a tightly packed layer may be raised to the position showr in broken lines, to facilitate withdrawal. The flap may project at any position in the layer.
Patent GB-746030-A (GB)
Title: Receiver for light-flash signalling system
IPC: H04B10/60
Filed: 1952-12-18
Abstract: 746,030. Photo-electric signalling systems. FRUNGEL, F. Dec. 18, 1952 [Jan. 2, 1952], No. 32101/52. Class 40 (3). In a system for signalling by light flashes, e.g. for warning a vehicle in front that it is to be overtaken, means are provided which will respond only to light flashes which (1) occur in regular succession, (2) are of a duration of between 10<SP>-5</SP> to 10<SP>-7</SP> seconds, and (3) have a luminous flux which rises at a rate of 100 lumen per microsecond. Light flashes of the kind referred to above from a source of the type described in Specification 742,396 are received on a photo-electric cell 1 situated behind a lens 29 and a blue filter 30. This cell is situated on the rear of the vehicle and pulses developed at its anode are fed through condenser 2 which with the grid leak 3 of amplifier valve 4 has such a time constant as to eliminate all pulses of more than 5 x 10<SP>-6</SP> seconds duration. The anode resistors of this stage and the subsequent two stages are relatively low so as to make the circuit an efficient high-frequency amplifier. Tube 6 forms with tube 7 and a common cathode resistor 13, a relaxation oscillator. A negative input signal causes the cathode of tube 6 to go negative and the anode positive. The positive anode pulse increases the conductivity of valve 7 which, due to the increased current sends the cathode of valve 6 positive so that valve 6 blocks, remaining so until the charge on the grid condenser 14 has leaked away. During this period a relay 16 and, if required, a glow tube 34 are energized. The anode relay of the oscillator may operate a further relay which is delayed by a parallel condenser the arrangement being such that a warning signal is operated if pulses arrive at intervals of less than one second. If the photo-cell is situated at the rear of the vehicle and the amplifier near the driver, they may be connected through a lowcapacity cable (Fig. 3, not shown). Pulse transformers may be used at the transmitting and receiving ends of the cable (Fig. 4, not shown) and a preamplifier comprising a transistor may be situated adjacent the photo-cell.
Patent GB-1001516-A (GB)
Title: Improvements relating to fasteners
IPC: F16C33/08
Filed: 1961-09-07
Abstract: 1,001,516. Stud and socket fastenings. ILLINOIS TOOL WORKS. Sept. 7, 1961 [Sept. 8, 1960], No. 32173/61. Heading E2B. [Also in Division F2] An assembly comprises a work piece having an aperture in which there is a fastener of a deformable mouldable material comprising a shank passing through the aperture, and a head engaging one side of the work piece, the shank having a number of axially-extending ribs of which the parts within the aperture are crushed and the parts lying outside the aperture serve as shoulders securing the fastener in the work piece, the shank being held in an expanded state by a drive pin or screw lying in an axial passageway in the shank. In the arrangement according to Figs. 1 and 2, in which the fastener is secured in apertured work pieces 58, 60, the fastener comprises a body member 32 and drive pin 34 which may be integral with or separate from the body member and which may be threaded. The body member includes shank sections 36, 38, 40 integrally joined to a head 48 and providing a bore 50 which is tapered towards the entering end of the shank sections and which is adapted to receive the drive pin 34 for compressing the shank section within the aperture on the work pieces. The outer surface of the shank is generally cylindrical and is formed with grooves 66 which provide ribes 68 tapering in width towards the entering end of the fastener. The head 48 includes a sealing section 70 and a resilient flange 74 which, in use, forms a secondary seal against the work piece 58. In another arrangement, Fig. 4 (not shown) the ribs 68 are formed by projections on the cylindrical surface of the shank. In the arrangement according to Fig. 5 the head 48b is formed to receive a channel section moulding and a bell-shaped plastics or metal washer 86, (see also Figs 9 and 12 (not shown)), is provided to form a seal with the convex side of a work piece 58b. A somewhat similar washer is used in the case of a concave side of a work piece, Fig. 7 (not shown). In another arrangement, Figs. 8, 13 and 14 (not shown) the washer is generally hemispherical while according to Fig. 15 (not shown) the washer includes a neck portion which is adapted to seat in the under surface of the fastener head. In the arrangement according to Figs. 16 and 17, a washer 86f is provided with a thin sleeve portion 104 having a closed end wall 106 which encloses the shank of the fastener. In a further arrangement, Fig. 18 (not shown), the passageway through the shank is generally Y-shaped on cross-section for a complementary Y-shaped driving pin. In further arrangements, Figs. 19, 20 and 21 (not shown) the shank sections are generally similar to the Fig. 5 arrangement and the drive pin is a screw, which when driven in, impresses complementary threads in the wall of the passageway. In the arrangement according to Figs. 22 and 23 (not shown), the shank sections taper outwardly from the entering end of the shank and then inwardly towards the head.
Patent GB-652260-A (GB)
Title: Improvements relating to marking machines
IPC: C14B1/56
Filed: 1948-12-06
Abstract: 652,260. Printing-surfaces. LOTUS, Ltd., and BOSTOCK, G. S. Dec. 6, 1948, No. 32223/47. [Class 100 (ii)] In a machine for printing the same pattern on different sized blanks of boots, shoes, &c. the printing surface comprises two parts, one on a carrier fixed to the underside of the platen and the other on a carrier slidably mounted on the first carrier with rack-and-pinion drive and a lock for retaining the slidable carrier in a set position. As shown (in plan), two printing plates are secured to the undersides respectively of a fixed carrier plate 171 and a sliding carrier plate 181 ; the plate 171 may be attached to the platen of a machine as described in Specification 646,811 by upstanding tongues 24a engaged by a cam on the platen, while the plate 181 is secured across the ends of a U-shaped strip 27 whose slotted limbs slide on pegs 26 projecting from the plate 171 ; a pinion 30 secured to a tube rotatable on a post 28 fixed to the plate 171 engages a rack 31 on the strip 27, this pinion being moved by an arm 32 secured to the top of the tube and having hinged thereon a spring-loaded lever 33 carrying a plunger 34 which may be located in one of the holes 231 in a sector 35 fixed to the post 28.
Patent GB-211587-A (GB)
Title: Improvements in or relating to vehicles for service on roads and rails
IPC: B60F1/04
Filed: 1922-11-24
Abstract: 211,587. Stronach, R. S., Galbraith, A., and Roadrails, Ltd. Nov. 24, 1922. Secondary frames.-In a vehicle adapted to run wholly on rails or having wheels running on rails and other wheels simultaneously running on the ground, a superstructure carrying the power plant is supported on driving wheels or on an endless tractor and is also pivoted to a sub. structure carried by ball or other joints on rail bogies. In the construction shown adapted to run on both rails and road, the superstructure a carrying the boiler and engines or other power unit is connected at its front end by transverse pivots p to the substructure c which is supported upon bogies d running on rails. The front end of the superstructure is supported by the leadin@ bogie while the rear part rests upon driving wheels e running upon the ground inside or outside the rails. The rear end of the superstructure is guided during vertical play by rollers v which engage the sides of a structure such as a tank q on the substructure c. The bogies support the substructure by means of ball and socket connections j so that both the superstructure and substructure may oscillate laterally together, such oscillations being by springs i. Specifications 114,880 and 170,196, [both in Class 79 (iii), Motor vehicles, Arrangement &c. of parts of], are referred to.
Patent GB-347655-A (GB)
Title: Improvements in or relating to feed brake apparatus for rolling mills
IPC: B21B39/08
Filed: 1929-10-23
Abstract: 347,655. Permanently applied brakes. KRUPP AKT.-GES., F., Buckau, Magdeburg, Germany. Oct. 23, 1929, No. 32236. Convention date, Dec. 19, 1928. Void [Published under Sect. 91 of the Acts]. [Class 103 (i).] In rolling mills, strip material &c. passes between brake blocks 1, 2, the upper block being tilted by a counterweight 6 to release the brake when a hand - lever 13 operates an eccentric to raise and so release the pawl 9 from engagement. Fine adjustment power is obtained by moving the lower block by hand-wheel 20 through worm gearing 17. The block can also be swung out sidewise on pivot 22.
Patent GB-1357797-A (GB)
Title: Acrylic modifiers for vinyl halide polymers
IPC: C08F291/00
Filed: 1971-07-09
Abstract: 1357797 Two-stage acrylic copolymers; vinyl halide polymer compositions ROHM & HAAS CO 9 July 1971 [17 July 1970 20 Jan 1971] 32296/71 Heading C3P Sequentially produced copolymers are obtained by polymerizing a final, rigid thermoplastic portion comprising at least 35% by weight of a (meth)acrylate or an optionally substituted styrene and having a molecular weight of 400,000 to 5,000,000 on to particles of a first non-cross-linked soft portion comprising at least 25% by weight of a C 1-18  alkyl acrylate and having a molecular weight up to 450,000. The copolymers are desirably incorporated into vinyl halide polymers. In examples, conventional emulsion techniques are employed, with filtering and concentration after the first stage followed by addition of further water and other ingredients prior to the second stage, to produce copolymers of (a) n-butylacrylate, optionally with styrene, ethylacrylate and methmethacrylate and (in a comparative experiment) butylenediacrylate and (b) methyl methacrylate, optionally with ethylacrylate, butylacrylate and styrene, in each case in appropriate proportions. The acrylic copolymers are added to polyvinyl chloride, which may include tin stabilizer and lubricants.
Patent GB-412110-A (GB)
Title: Improvements in or relating to the manufacture of glass
IPC: C03C1/10
Filed: 1933-11-20
Abstract: 412,110. Glass manufacture. DEGEA AKT.-GES. AUERGES., 16, Rotherstrasse, Berlin. Nov. 20, 1933, No. 32351. Convention date, Nov. 19, 1932. [Class 56.] Relates to glass which is coloured by oxide of neodymium and is used to enhance colour contrasts, as described in Specification 338,334, [Class 56]. According to the present invention, the glass contains a smaller quantity of the neodymium oxide, the content being at least 0À002 gramme, but not more than 0À03 gramme per square centimetre of the surface. The glass is intended for making illuminating-glassware for deepening the colours of objects seen by artificial light. Other colouring oxides may be added to the glass if required.
Patent GB-427614-A (GB)
Title: Improvements in microscope stages
IPC: G02B21/26
Filed: 1934-11-10
Abstract: 427,614. Microscopes. ZEISS, C., [Firm of], Carl-Zeiss-Strasse, Jena, Germany. Nov. 10, 1934, No. 32411. Convention date, Nov. 13, 1933. [Class 97 (i)] In a microscope stage fitted with a condenser, the stage is provided with an abutment surface preventing upward axial displacements of the condenser, and with holding elements preventing lateral displacements of the condenser, only one of these elements being movable on the stage and at least that part of the condenser mount which co-operates with the movable element having its surface inclined to the axis of the condenser. In the form shown, the stage b is provided with a recess d coaxial with the illumination aperture c, and having a plane upper surface e, and into this recess extend two projections f of the stage. The inner surface of each projection comprises a cylindrical part g and a conical part h, both coaxial with the recess d. The portion of the condenser mount entering the recess has a plane annular surface n abutting against the surface e to prevent upward axial displacement of the condenser, and cylindrical and conical surfaces o, p respectively, corresponding to the surfaces g, h. A screw i threaded through the stage opposite the projections f engages the surface p, so that the pressure which it exerts has components parallel and at right-angles to the axis of the condenser. Instead of shaping the condenser mount as above described, a condenser of ordinary form may be inserted in a sleeve having the appropriate external surface.
Patent GB-209102-A (GB)
Title: Improvements in and relating to radio receiving systems
IPC: H04B7/08
Filed: 1923-12-28
Abstract: 209,102. Marconi's Wireless Telegraph Co., Ltd., (Assignees of Ranger, R. H.). Dec. 28, 1922, [Convention date]. Atmospherics and undesired signals, eliminating.-Interference in radio reception is eliminated by using two receiving aerials of different tuning or directional characteristics. Signal waves received on the main aerial are transferred through a tuned circuit to the detector. The signal waves are also received on the auxiliary aerial and the peak of each valve is utilized to render conductive a valve or other device connected across the condenser or other element of the tuned circuit. For the desired signal, this short-circuiting of the condenser takes place when it has no charge; but for statics and undesired signals, which are in general of different phase and frequency, the short-circuiting takes place when the condenser is more or less charged. The tuned circuit is thus rendered ineffective for transierring undesired signals to the detector. Fig. 4 shows one arrangement of the circuits. The main aerial B is connected through an amplifier 4 and coupling 5 to a tuned circuit 5s, 9, 11, 10p, which is coupled by the coils 10p, 10s to a detector 12 and indicator 13. The auxiliary aerial B' is connected through an amplifier 4<1> and coupling 6 to the grid circuits of two valves 7, 8, which also include a potentiometer 15. The plates of these valves are connected to opposite sides of the condenser 9, and their filaments are connected through a battery to a mid-point of the coil 10p. Suitable phase-adjusting devices may be provided in the input or output circuits of the amplifiers 4, 4<1>. If the two aerials are so situated that the desired waves are in quadrature, no phase adjustment is required. If not, the phase adjusters are so set that for the desired signal waves, the condenser 9 is short-circuited by the valves 7, 8 at moments of the waves cycle when the condenser is not charged. Such waves are therefore passed to the detector 12 without diminution in intensity. Other waves received on the main aerial B will be substantially reduced by the periodic short-circuiting of the condenser 9. In order that the auxiliary aerial B<1> may respond only to the desired signal, it is tuned as sharply as possible and is sharply directional. The potentiometer 15 is so adjusted that only the peaks of the signal waves render the valves 7, 8 conductive, thus short-circuiting the condenser 9 for only a small fraction of the cycle. A shortcircuit may be made across a resistance or inductance in the tuned circuit, instead of across the condenser 9.